標題: | GSC-based frequency-domain equalizer for CP-Free OFDM systems |
作者: | Lin, CY Wu, JY Lee, TS 電信工程研究所 Institute of Communications Engineering |
關鍵字: | OFDM;ISI suppression;generalized sidelobe canceller;partial adaptivity |
公開日期: | 2005 |
摘要: | A multi-antenna generalized sidelobe canceller (GSC) based equalizer for inter-symbol interference (ISI) suppression is proposed for high-rate single-input multiple-output (SIMO) orthogonal frequency division multiplexing (OFDM) systems without cyclic prefix (CP). The proposed method relies on the block representation of the OFDM transmission and exploits the ISI subspace structure in the associated multi-antenna system model. A computationally efficient partial adaptivity (PA) implementation of the GSC equalizer is also provided for reducing the receiver complexity. Simulation results show that the proposed GSC-based solution yields an equalization performance almost identical to that obtained by the conventional CP-based OFDM system and is highly resistant to the increase of channel delay spread. |
URI: | http://hdl.handle.net/11536/17561 |
ISBN: | 0-7803-8938-7 |
ISSN: | 1550-3607 |
期刊: | ICC 2005: IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-5 |
起始頁: | 1132 |
結束頁: | 1136 |
顯示於類別: | 會議論文 |